marsden



(No Model.)

J. T, MARSDEN. PIGKER STAFF CHECK FOR LOOMS.

No. 449,268. Patented Mar. 31,1891.

. Jmesriygzwdem W f q y/ UNITED STATES PATENT OFFICE...

JAMES T. MARSDEN, OF LEVVISTON, MAINE, ASSIGNOR OF TVVO-THIRDS TO J Ol-IN AND JOSEPH F. MARSDEN, BOTH OF SAME PLACE.

PlCKER-STAFF CHECK FDR LOOMS.

SPECIFICATION forming part of Letters Patent No. 449,268, dated March 31, 1891.

Application filed August 16, 1888. Serial No. 282,859. (No model.)

T0 on whom it may concern:

Be it known that I, JAMES T. MARSDEN, of Lewiston, county of Androscoggin, State of Maine, have invented an Improvement in Picker-Staff Checks for Looms, of which the following description, in connection with the accompanying drawings, is a specification, like letters and figures on the drawings representing like parts.

This invention has for its object to provide a loom with improved devices by which to arrestthe picker-stick as it is carried back in the shuttle-box by the momentum of the shuttle, the gradual checking of the movement of the pickerstick toward the direction of the [light of the shuttle into the shuttle-box preventing throwing the cop or bobbin from the loomshuttle spindle, thus avoiding waste of yarn.

In accordance with my invention I have provided the lay at each end near each shuttleboX with a slidebar having a projection adapted to be struck by the usual picker-stick as it is being moved by the shuttle toward the outer end of the shuttle-box, the said slidebars mounted to slide freely in suitable guides carried by the lay, being joined, respectively, by suitable connections to the opposite ends of afriction-plate, preferably of leather,whioh, placed and made horizontally movable in guides attached to the lower side of the lay, is acted upon by a friction pad or device, preferably made as a piece of spring metal or spring controlled in its movements.

My invention consists, essentially, in the combination, with the lay, the picker-sticks, the slide-bars having projections extended therefrom across the path of movement of and to be struck by the picker-sticks, guides for the said bars, and a bridge, of a frictionplate extended through the bridge connections between the opposite ends of the plate and the said slide-bars, and a bent spring friction-pad notched to form a reduced central portion embraced and held by the bridge and adapted to act upon the friction-plate and retard its movement when a picker-stick in its outward movement meets the projection of the slide-bar, to operate substantially as will be described.

Figure 1 is a front elevation of a sufficient portion of the side frames of a loom and lay to enable myinvention to be understood; Fig. 2, an under side view of Fig. 1; Fig. 3, a section in the line as; Fig. 4, details of the friction-plate, and Fig. 5 details of the friction pad or spring.

The side frame A of the loom, thelay B, havinga shuttle-box at each end and pivoted at B, and the pivoted picker-sticks O are and may be all as usual, and the said picker-sticks in practice may and will be vibrated to throw the shuttle from one to the opposite box in any usual manner, the picker-sticks being carried into the outer ends of the shuttle-boxes alternately by the action of the usual shuttle striking a picker of usual construction, but not shown on the picker-stick.

The object of this invention is to check the outward movement of the picker-stick by reason of the momentum of the shuttle, thus avoiding throwingthe cop or bobbin from the loom-shuttle spindle. To do this, the lay at each shuttle-box has attached to it, as by bolts D, the metallic guides D, preferably of cast metal, and having loops or guides 2, in which are mounted loosely the slide-bars a a, each having a like projection 3, (see Fig. 2,) which is extended across the slot 4 in the bottom of the shuttle-box in the path of the picker-stick as the latter is moved by the impact of the usual shuttle against it. The said slide-bars have secured to their inner ends connectors 11, of wire or other durable material, the said connectors being attached to the opposite ends of a friction-plate d, preferably of leather, substantially as shown in Fig. 4, the central portion of the friction-plate being extended through a loop or bridge e, which serves to hold in place the friction pad or device f, which latter, according to its stiffness, may be made to press against the said friction-plate with more or less force, that depending upon the size of the shuttle. The shape of the friction-plate is fully shown in Fig. 4 andis substantially two crosses placed end to end.

Fig. 1 at the left shows the picker-stick as having been removed by the impact of the blow of the shuttle, the picker in going into such position having struck the projection 3 and moved the bar to the left, drawing the friction-pad between the lay and the spring f. In the next flight of the shuttle to the right it will strike the opposite or right-hand pickerstick and cause the said picker-stick to drag the friction-plate horizontally, the frictionpad holding the same snugly and acting as a dead-weight, which has to be drawn by the picker-stick.

The friction-pad, a steel plate of spring shape, as best shown in Fig. 5, is notched to be embraced and held by the bridge 6, attached to the lay by the screws 6'.

The casting D has an ear 8 extended at right angles from it to lap against the side of the shuttle-box, the said casting with its loops 2 forming strong and serviceable guides for the slide-bars, which are moved rapidly by the action of the picker-sticks against them.

The projections 3 may be covered with leather or canvas, if desired, in any usual manner to cushion the blow of the picker-stick.

I claim- 1. The lay, the leather friction-plate, and the friction-pad acting against the plate, combined with the metallic frames D, an ear 8, extended from each at right angles thereto to lap against thelay, the loops or guides integral with said frames, the slide-bars having projections to cross the path of' the pickersticks, and connectors between the said slidebars and the ends of the friction-plate, to operate substantially as described.

2. The lay and picker-sticks, the metallic a reduced central portion embraced and held by the bridge, and the connectors between the opposite ends of the plate and the said slidebars, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JAMES T. MARSDEN.

Witnesses:

JOHN B. COTTON, SETH M. CARTER. 

